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nexus/wiki/concepts/Node-Classes.md
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---
title: "Node Classes"
type: concept
tags: [Kubernetes, Karpenter, EC2, Instance-Configuration]
sources: []
last_updated: 2026-04-19
---
## Definition
Node Classes 是 Karpenter 的核心组件,定义 EC2 实例的 provisioning 配置细节。
## Key Attributes
- **子网**:实例部署的 subnet
- **节点角色**IAM 角色和策略
- **AMI**Amazon Machine Image可使用 EKS 优化 AMI 或自定义 AMI
- **安全组**:实例附加的安全组
## Related Concepts
- [[Node-Pools]]:定义调度约束和容量限制
- [[Karpenter]]:使用 Node Classes 的 compute management tool
- [[AMI]]Amazon Machine Image
## Aliases
- Node Classes
- Karpenter Node Classes